Catalyst Support Effect on the Activity and Durability of Magnetic Nanoparticles Toward Design of Advanced Electrocatalyst for Full Water Splitting
| Autor: | Galina Marzun, Bilal Gökce, Jani Sainio, Elisabeth Mühlhausen, Tanja Kallio, Mohammad Tavakkoli, Fatemeh Davodi, Hua Jiang |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Catalyst support ta221 Chemie 02 engineering and technology Carbon nanotube 010402 general chemistry Electrocatalyst 01 natural sciences water splitting law.invention Catalysis law catalyst support General Materials Science ta114 carbon nanotubes maghemite (γ-FeO) self-assembly 021001 nanoscience & nanotechnology core-shell nanoparticles 0104 chemical sciences Chemical engineering Magnetic nanoparticles Water splitting Self-assembly 0210 nano-technology Hybrid material polymer functionalization |
| Zdroj: | ACS APPLIED MATERIALS AND INTERFACES. 10(37):31300-31311 |
| ISSN: | 1944-8244 |
| Popis: | Earth-abundant element-based inorganic–organic hybrid materials are attractive alternatives for electrocatalyzing energy conversion reactions. Such material structures do not only increase the surface area and stability of metal nanoparticles (NPs) but also modify the electrocatalytic performance. Here, we introduce, for the first time, multiwall carbon nanotubes (MWNTs) functionalized with nitrogen-rich emeraldine salt (ES) (denoted as ES-MWNT) as a promising catalyst support to boost the electrocatalytic activity of magnetic maghemite (γ-Fe2O3) NPs. The latter component has been synthesized by a simple and upscalable one-step pulsed laser ablation method on Ni core forming the core–shell Ni@γ-Fe2O3 NPs. The catalyst (Ni@γ-Fe2O3/ES-MWNT) is formed via self-assembly as strong interaction between ES-MWNT and Ni@γ-Fe2O3 results in NPs’ encapsulation in a thin C–N shell. We further show that Ni does not directly function as an active site in the electrocatalyst but it has a crucial role in synthesizing the m... |
| Databáze: | OpenAIRE |
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